Struct Header 

pub struct Header {
    pub flags: u16,
    pub codec_id: u8,
    pub header_len: u8,
    pub schema_id: u64,
    pub msg_type: u32,
    pub msg_version: u16,
    pub payload_len: u16,
}

Parsed v1 envelope header.

Field invariants

• header_len is the declared length of the header prefix in bytes.
  • v1 decoding accepts values >= V1_HEADER_LEN and may ignore appended header bytes.
  • v1 encoding currently only supports header_len == V1_HEADER_LEN.
• payload_len is the declared payload length in bytes.
• header_len + payload_len is validated against crate::SLOT_CAPACITY.

Fields

flags: u16

Envelope flags; see crate::flags.

codec_id: u8

Codec identifier used to interpret the payload bytes.

header_len: u8

Header length in bytes (append-only evolution).

schema_id: u64

Schema identifier (application-defined).

msg_type: u32

Message type identifier within a schema (application-defined).

msg_version: u16

Message version within a schema/type (application-defined).

payload_len: u16

Payload length in bytes.

Trait Implementations

impl Clone for Header

fn clone(&self) -> Header

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Header

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Header

fn eq(&self, other: &Header) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Header

impl Eq for Header

impl StructuralPartialEq for Header